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11/05/2004 [1] Decomposition conditions of methane hydrates in sediments were measured during formation‐decomposition cycles. As test sediments, we used silica sand, sandstone, and clays (kaoline and bentonite), which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities. To better understand the results, we also used ...
Decomposition of methane hydrates in sand, sandstone, clays, and glass beads Tsutomu Uchida,1 Satoshi Takeya,2 Evgene M. Chuvilin,3 Ryo Ohmura,2 Jiro Nagao,2 Vladimir S. Yakushev,4 Vladimir A. Istomin,4 Hideki Minagawa,2 Takao Ebinuma,2 and Hideo Narita2 Received 30 August 2003; revised 24 February 2004; accepted 5 March 2004; published 11 May 2004.
10/05/2004 Decomposition conditions of methane hydrates in sediments were measured during formation-decomposition cycles. As test sediments, we used silica sand, sandstone, and clays (kaoline and bentonite), which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities. To better understand the results, we also used
Decomposition of methane hydrates in sand, sandstone, clays and glass beads . May 2004; Journal of Geophysical Research Atmospheres 109(5) DOI: 10.1029/2003JB002771. Authors: Tsutomu Uchida ...
The effect of grain sizes on the decomposition of methane hydrate was measured. The results showed that bulk hydrates could exist stably at 223 K and atmospheric pressure because of the self-preservation effect. However, hydrate formed in sands was relatively easier to decompose because it had a higher equilibrium pressure compared with bulk hydrate at the same temperature. In this case, there ...
Decomposition conditions of methane hydrates in sediments were measured during formation-decomposition cycless test sediments, we used silica sand, sandstone, and clays kaoline and bentonite, which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities.
Decomposition of methane hydrates in sand, sandstone, clays, and glass beads / T. Uchida, S. Takeya, E. M. Chuvilin et al. // Journal of Geophysical Research ...
DECOMPOSITION OF METHANE HYDRATE IN QUARTZ SAND BY INJECTING HOT WATER: ZHOU Xi-tang, FAN Shuan-shi, LIANG De-qing, LI Dong-liang, DONG Fu-hai: 1.Guangzhou Energy Research Institute of Chinese Academy of Sciences; 2.The Graduate Institute of Chinese Academy of Sciences; 3.Chemical Engineering School of Maoming University
On the other hand, for bentonite particles, the results indicated that methane hydrates formed not only between the particles but also in the interlayers. A thermodynamic promoting effect was found for dilute bentonite solutions, although the positive decomposition-temperature shift was at most +0.5 K. 人気論文. 論文. 著者. Decomposition of methane hydrates in sand, sandstone, clays ...
Request PDF Formation and decomposition of methane hydrate using silica sand The formation of methane hydrate (CH4 hydrate) in silica sand and decomposition experiments were performed at 7.0 ...
11/05/2004 Decomposition conditions of methane hydrates in sediments were measured during formation-decomposition cycles. As test sediments, we used silica sand, sandstone, and clays (kaoline and bentonite), which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities. To better understand the results, we also used
Decomposition conditions of methane hydrates in sediments were measured during formation-decomposition cycles. As test sediments, we used silica sand, sandstone, and clays (kaoline and bentonite), which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities. To better understand the results, we also used
DECOMPOSITION OF METHANE HYDRATE IN QUARTZ SAND BY INJECTING HOT WATER: ZHOU Xi-tang, FAN Shuan-shi, LIANG De-qing, LI Dong-liang, DONG Fu-hai: 1.Guangzhou Energy Research Institute of Chinese Academy of Sciences; 2.The Graduate Institute of Chinese Academy of Sciences; 3.Chemical Engineering School of Maoming University
Request PDF Formation and decomposition of methane hydrate using silica sand The formation of methane hydrate (CH4 hydrate) in silica sand and decomposition experiments were performed at 7.0 ...
1 Decomposition of Methane Hydrates in Sand, Sandstone, Clays and Glass Beads (CH4 Hydrate Decomposition in Sediments) *Tsutomu UCHIDA1)2), Satoshi TAKEYA2), Evgene M. CHUVILIN2)3), Ryo OHMURA2 ...
Decomposition conditions of methane hydrates in sediments were measured during formation-decomposition cycless test sediments, we used silica sand, sandstone, and clays kaoline and bentonite, which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities.
Pore effects on decomposition of these materials were investigated by analyzing the pore-space distributions of the materials and by varying the initial water content of the samples. The results obtained for sand and sandstone samples indicated that the final decomposition temperatures were shifted lower than those for bulk hydrates at the same pressure. Temperature shifts were more negative ...
Decomposition of methane hydrates in sand, sandstone, clays, and glass beads / T. Uchida, S. Takeya, E. M. Chuvilin et al. // Journal of Geophysical Research ...
On the other hand, for bentonite particles, the results indicated that methane hydrates formed not only between the particles but also in the interlayers. A thermodynamic promoting effect was found for dilute bentonite solutions, although the positive decomposition-temperature shift was at most +0.5 K. 人気論文. 論文. 著者. Decomposition of methane hydrates in sand, sandstone, clays ...
The decomposition of methane hydrate crystals formed in sediment at 1.0, 4.0, and 7.0 °C was studied in a new apparatus designed to accommodate three different size volume beds of silica sand particles. The sand particles are microporous with a 0.9 nm pore diameter and have an average diameter equal to 329 μm. The hydrate was formed in the interstitial spaces between sand particles, and the ...
Decomposition conditions of methane hydrates in sediments were measured during formation-decomposition cycless test sediments, we used silica sand, sandstone, and clays kaoline and bentonite, which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities.
Decomposition of methane hydrates in sand, sandstone, clays, and glass beads / T. Uchida, S. Takeya, E. M. Chuvilin et al. // Journal of Geophysical Research ...
Decomposition of methane hydrates in sand, sandstone [1] Decomposition conditions of methane hydrates in sediments were measured during formation‐decomposition cycles. As test sediments, we used silica sand, sandstone, and clays (kaoline and bentonite), which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating ...
KINETICS OF HYDRATE FORMATION AND DECOMPOSITION OF METHANE IN SILICA SAND
On the other hand, for bentonite particles, the results indicated that methane hydrates formed not only between the particles but also in the interlayers. A thermodynamic promoting effect was found for dilute bentonite solutions, although the positive decomposition-temperature shift was at most +0.5 K. 人気論文. 論文. 著者. Decomposition of methane hydrates in sand, sandstone, clays ...
Decomposition conditions of methane hydrates in sediments were measured during formation-decomposition cycles. As test sediments, we used silica sand, sandstone, and clays (kaoline and bentonite), which are typical natural materials known as hydrate bearing sediments, and the range of samples cover a range of water saturating abilities. To better understand the results, we also used
06/07/2019 This paper reports results of the synchrotron-based tomography experiments for studying the methane-hydrate formation/decomposition in sand samples. Fast scanning times (70 secs) provided successive images (every 2-15 min) for a detailed study of these processes. During the methane gas-hydrate formation we observed water flows that we connect to the effect of cryogenic
Experimental studies on clay sample saturation by methane hydrates proved that clay particles play an important role in the hydrate accumulation and decomposition processes in sediments. Depending on water content, the same clay mineral can serve as inhibitor, neutral component and promoter of hydrate formation. Wet clay is a good mineral surface for hydrate formation, but clays represent the ...
Methane hydrate was formed in the sand by raising pore methane gas pressure to 8.3 MPa (confining pressure to 10.3 MPa), while the system was maintained at 8°C. The sand sample was continuously monitored for hydrate formation as in the Mount Elbert core tests, using pressure and temperature data and X-ray CT scans. Initiation of hydrate formation was detected by declining pressure and rising ...
Methane deposits in permafrost and hydrates are considered to be very sensitive in the expansive shallow-shelf regions, because with the relatively low pressures it would only take a small temperature change to release large amounts of methane. In addition, new methane is continuously being produced because the Arctic regions are rich in organic material that is decomposed by microbes in the ...
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